# ISO 2561:2006 — Withdrawn and superseded ISO standards

For ISO 2561:2006, item title is Plastics — Determination of residual styrene monomer in polystyrene (PS) and impact-resistant polystyrene (PS-I) by gas chromatography; status code is 9599; successor is ISO 2561:2012; withdrawn / published date is 2006-03-06, recorded from its source on 2026-08-05.

- **Identifier:** ISO 2561:2006 _(verified: appears in the quote below)_
- **Item title:** Plastics — Determination of residual styrene monomer in polystyrene (PS) and impact-resistant polystyrene (PS-I) by gas chromatography _(verified: appears in the quote below)_
- **Status code:** 9599 _(verified: appears in the quote below)_
- **Successor:** ISO 2561:2012
- **Withdrawn / published date:** 2006-03-06 _(verified: appears in the quote below)_

## What the source says

> 34833,IS,,ISO 2561:2006,Plastics — Determination of residual styrene monomer in polystyrene (PS) and impact-resistant polystyrene (PS-I) by gas chromatography,Plastiques — Détermination du styrène monomère résiduel dans le polystyrène (PS) et le polystyrène résistant au choc (PS-I) par chromatographie en phase gazeuse,2006-03-06,2,['83.080.20'],ISO/TC 61/SC 9,9599,[7518],[55457],['en'],11,<p>ISO 2561:2006 specifies a method for the determination of the residual styrene monomer in polystyrene (PS) and impact-resistant polystyrene (PS-I) by gas chromatography. It may also be used for the simultaneous determination of other volatile aromatic hydrocarbons in PS and PS-I.</p>

## Source

- https://isopublicstorageprod.blob.core.windows.net/opendata/_latest/iso_deliverables_metadata/csv/iso_deliverables_metadata.csv

Last verified: 2026-08-05. Review by: 2027-02-01.
Part of [Withdrawn and superseded ISO standards](https://referencesource.org/iso-standard-supersessions/).